ShowWindow?

["fakhreddin mohtasham" <f_mohtasham@hotmail.com>]

it is shameful while i am developing a game, i am not able to create an app 
which
                show a
                child window.is there anyone who do it before? the code is 
following.
                any typical code is prefered.
                thanks a lot.

                #include "windows.h"

                HINSTANCE hinst;
                HWND    hwndMain;
                HINSTANCE    ghinst;
                HWND    w1;
                WNDCLASS    wc1;
                LRESULT    APIENTRY WndProc(HWND,UINT,WPARAM,LPARAM);


                int APIENTRY WinMain(HINSTANCE hInstance,                    
  HINSTANCE hPrevInstance,
                                    LPSTR     lpCmdLine,                     
int       nCmdShow){

                MSG    msg;
                WNDCLASS    wc;
                if(!hPrevInstance){
                    wc.style = 0;
                    wc.lpfnWndProc = (WNDPROC) WndProc;
                    wc.cbClsExtra = 0;
                    wc.cbWndExtra = 0;
                    wc.hInstance = hInstance;
                    wc.hIcon = LoadIcon((HINSTANCE) NULL, IDI_APPLICATION);
                    wc.hCursor = LoadCursor((HINSTANCE) NULL, IDC_ARROW);
                    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
                    wc.lpszMenuName = "MainMenu";
                    wc.lpszClassName = "MainWndClass";

                    if(!RegisterClass(&wc)) return FALSE;
                }

                hinst = hInstance;
                hwndMain = CreateWindow("MainWndClass","Sample",             
            WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,
                               CW_USEDEFAULT,CW_USEDEFAULT,(HWND)NULL,
                    (HMENU)NULL,hinst,(LPVOID)NULL);
                if(!hwndMain)    return FALSE;
                ShowWindow(hwndMain,nCmdShow);
                UpdateWindow(hwndMain);


                while(GetMessage(&msg,(HWND)NULL,0,0)){
                        TranslateMessage(&msg);
                        DispatchMessage(&msg);
                }
                return    msg.wParam;
                }



                LRESULT    APIENTRY WndProc(HWND hwnd,UINT uMsg,WPARAM 
wParam,LPARAM lParam){
                    switch(uMsg){
                        case WM_KEYDOWN:
                            switch(wParam){
                                case    VK_F12:
                if(!ghinst){
                    wc1.style = CS_HREDRAW | CS_VREDRAW;
                    wc1.lpfnWndProc = (WNDPROC) NULL;
                    wc1.cbClsExtra = 0;
                    wc1.cbWndExtra = 0;
                    wc1.hInstance = ghinst;
                    wc1.hIcon = LoadIcon((HINSTANCE) NULL, IDI_APPLICATION);
                    wc1.hCursor = LoadCursor((HINSTANCE) NULL, IDC_ARROW);
                    wc1.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
                    wc1.lpszMenuName = NULL;
                    wc1.lpszClassName = "WndClass1";

                    if(!RegisterClass(&wc1)) return FALSE;
                }
                w1 = CreateWindowEx(0,"WndClass1","Sample window",
                            WS_POPUPWINDOW,50,50,
                            100,100,hwndMain/*(HWND)NULL*/,
                            (HMENU)NULL,ghinst,(LPVOID)NULL);
                if(w1 == NULL)    DestroyWindow(hwndMain);
                ShowWindow(w1,SW_SHOWDEFAULT);
                UpdateWindow(w1);
                //w1 is created but i could not show it anyway.

                                    break;
                            }
                            return 0;
                        case WM_CLOSE:
                                DestroyWindow(hwndMain);
                                return 0;
                        case WM_PAINT:
                            return 0;
                        case WM_SIZE:
                            return 0;
                        case WM_DESTROY:
                            PostQuitMessage(0);
                            return 0;
                        default:
                            return    
DefWindowProc(hwnd,uMsg,wParam,lParam);
                    }
                    return 0;
                }


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